Several threatened species are found in the heath vegetation of this ecoregion, including the western bristlebird (Dasyornis longirostris VU), western whipbird (Psophodes nigrogularis nigrogularis), and the western ground parrot (Pezoporus wallicus flaviventris), while the noisy scrub-bird (Atrichornis clamosus VU) lives in densely vegetated, eucalypt-dominated gullies.